function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv für Naturgeschichte', 1],
    ['Boston Journal of Natural History', 2],
    ['Bulletin de la Société Philomathique de Paris, Série 8', 1],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College, 3', 1],
    ['Bulletin of the United States Fish Commission', 2],
    ['Carnegie Institution of Washington Publication', 1],
    ['Graellsia', 1],
    ['Journal of African zoology', 1],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 2],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 1],
    ['Occasional Papers of the Museum of Zoology, University of Michigan', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 5],
    ['Proceedings of the United States National Museum, 3', 6],
    ['The American Journal of Science and Arts, Series 2', 4],
    ['Zootaxa', 9],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);